Apparatus for projecting radiant energy.



. w. P. ADAMS. APPARATUS FOR PROJEC TING RADlANT ENERGY.

I APPLICATION FILED NOV. 16. 19- 1,1 90,071. Patented July 4, 1916.

M'rr/V $53: I I INVEAMv UNITED STATES PATENT-curios,-

WALDO I. ADAMS, OF SYRACUSE, NEW YORK.

APPARATUS FOR PROJECTING RADIANT ENERGY.

To all whom it may concern:

Be it known that I, VVALno I Aimius, a citizen of the United States, andresident of Syracuse, in the county of Onondaga, in the State of NewYork, have invented new and useful Improvements in. Apparatus forProjecting Radiant Energy, of which the following, taken in connectionwith the accompanying drawings, is a full, clear, and exact Thisinvention relates to the projection of radiant energy en' anating fromthe incandescing filament of an electric lamp and refers moreparticularly to means for utilizing the energy of certain invisibleradiations that are not transmissible through ordinary glass. In otherwords, the function of my invention is to utilize the radiant energy oflight, emanating from an incandescent electric lamp having itsincandescing filament in and uniformly around the axis and adjacent tothe. focus of powerful reflecting media, with the lamp bulbor envelopcapable of transmitting therethrough certain F invisible radiations ofhigh frequency and short wavedength so that the resultant radiant energycan be used in photography, printing and allied arts and also intherapeutical and pathological worl.

In the drawings, I igurel represents, diagrammatically, one form ofapparatus for carrying out the object stated. Fig. 2 is an enlargeddiagrammatic view of one form of lamp filament.

Inthis instance, the source of light-1.- is centered in the axis andfocus of the reflector andisjnclosed within a hollow bulb or tube 2 ofrock crystal, quartz or other substance capable of transmittingtherethrough definitive blue, violet and ultra-violet radiations. Thesource of light is arranged in and uniformly around the focal axis of areflector '3 which is of such size and form as to reflect andconcentrate the radiations within and upon a lens or screen 4 ofrelatively small area and located in the focal axis of the reflectorpreferably between the focal point and source of light, said lens orscreen being also made of rock crystal, quartz or other substancecapable of transmitting therethrough radiations of high frequency andshort wave length. The

. lens or screen .-4. is supported in a suitable frame, or housing -5 ofmetal or other suitable material which is preferably secured to andincloses the open end of the Specification of Letters Patent.

Patented July 4, 1916.

Application filed November 16, 1914. Serial No. 872,403.

In some uses, the lens or screen.

clouded in such manner as to filter out certain radiations such as thoseof low frequencies and long wave lengths. The term invisible radiationsis used in its technical sense as indicating those.

rays which do not produce the effect of vision upon the eye, asdistinguished from the visible or luminous rays, and while it may betrue that quartz is the only substance known at present to be capable oftransmitting tlicrethi'ough the invisible 'adiations of higher frequencythan the violet rays, such for example as ultra violet radiations, it isnot to be assumed that other substances may not be discovered to performthe same functions as quartz, and it is-for this reason that applicantdoes not wish to limit the present invention to the use of quartz as aninclosing medium for the inca-ndescing filament. On the other hand, itmay be possible to use rock salt as an inclosing medium for theincandescing filament in transmitting the radiations of lower frequencythan red rays, such for example as infra red, and, therefore, theinvention is not limited to the use of any particular material for theinclosing medium so long as it is capable of transmitting therethroughany of these invisible rays. Furthermore, as will be obvious from theforegoing description, this particular lamp may be used for projectingor transmitting invisible rays with or without the visible rays andindedeparting from the spirit of this invention.

The term fixate nucleate light is'used throughout the specification andclaims to briefly define an electrically incandescing filament capableof producing a highly concer rated source or nucleus of light at or nearthe fixed focal point of'a reflector.

What I claim is:

1. In an apparatus of the character described, the combination of afixate nucleate light, and an inclosing medium therefor including amaterial that will permit the passage of invisible radiationstherethrough.

2. In an apparatus of the character described, the combination of anelectrically incandescing filament and an inclosing medium thereforincluding a material that will permit the passage of invisibleradiations theret'hrough.

3. In light-projecting apparatus, the com-' bination of a metallicreflector, and an in randescent electric lamp producing ii iii:- atenucleate of light of high intensity in and uniformly around the focalaxis of the reflector adjacent the focus thereof, said light having anenveloping medium capable of transmitting therethrough certain invisibleradiations of such light.

4. In an apparatus of the character described, the combination of areflector, a iixate nucl late light at or immediately adjacentthe focalpoint of the reflector, and an inclosing' medium for said light includinn :1. material that will permit the passage offinvisililc radiationstherethrough.

5. 1n lightproiecting apparatus, the combination of a. convergingmetallic reflector, and an incandescent electric lamp producin a fixatenucleate of light of high intensity in and uniformly around the focalaxis of the reflector adjacentthe focus thereof, said lamp having alight-enveloping medium capable of transmitting therethrough the visibleand certain invisible radiations.

(i. In an apparatus of the character de scribed, the combination with aconcentrating reflector, of an electrically incandescing filamentlocated at or innncdiately adjacent the Focal point of the reflector,and an inclosing medium for said iilalnent including a material thatwill permit the passage of invisible radiations therethrough.

T. In light-projecting apparatus, the coinhination oi a metallicreflecto a lens coaxial therewith and in the path of the reflected rays,and an incandescent electric lamp producing a iixate nucleate light ofhigh intensity in and uniformly around the focal axis of the reflectoradjacent the focus thereof, said lamp having a light-enveloping mediumcapable oi transmitting therethrougrh radiations ot hoih higherfrequency than violet radiations.

E5. In an apparatus of the character descrilied, the combination of ametallic relicctor, a fixate nucleate light 01 high intensity in anduniformly around the local axis of the reflector adjacent the focusthereof, and a. light-inclosing medium eapahle of transmittingtherclln-ough invisible radiations of such light.

9. ln 1ight-prejecting apparatus, the combination of a convergingmetallic roliector, a lens co-axial therewith and near the focus of thereflected rays, and an incamlcscent electric lamp prmlucing a fixatenucleate light of high intensity in and uniformly around the focal axisof the reflector adja cent the focus thereof, said lamp having alight-enveloping medium capable of transmitting therethrough certaininvisible radiations of such light.

10. In light'projecting apparatus, means for concent ating andprojecting hy reflection the visibile and invisible radiationsenninating from a nucleate of an incandescent electric light.

In witness whereof I have hereunto set my hand this 11th day of November1914.

ivatno r. ADAMS. l l itnesses H. I Cimsii, Amen M. CANNON.

